EP2720819A1 - Holder for a cutting device - Google Patents
Holder for a cutting deviceInfo
- Publication number
- EP2720819A1 EP2720819A1 EP12728226.7A EP12728226A EP2720819A1 EP 2720819 A1 EP2720819 A1 EP 2720819A1 EP 12728226 A EP12728226 A EP 12728226A EP 2720819 A1 EP2720819 A1 EP 2720819A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- longitudinal direction
- cutting device
- projection
- holding part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002826 coolant Substances 0.000 claims abstract description 26
- 239000000314 lubricant Substances 0.000 claims abstract description 22
- 239000006228 supernatant Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/10—Cutting tools with special provision for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/043—Tool holders for a single cutting tool with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/02—Fixation using an elastically deformable clamping member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/12—Cooling and lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/12—Special arrangements on tool holders
- B23B29/14—Special arrangements on tool holders affording a yielding support of the cutting tool, e.g. by spring clamping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/14—Cutters, for shaping with means to apply fluid to cutting tool
Definitions
- the present invention relates to a cutting device with a cutting insert and a holding part. Furthermore, the invention relates to a holder for such a cutting device.
- a cutting device which has a holding part with an elongated beam part.
- An arranged at a front portion of the beam portion clamping head projects with a projection on the level of an upper surface of the beam part.
- On one longitudinal side of the beam part an upper finger is arranged, which forms with a lower finger a receiving pocket for receiving a cutting insert.
- a nip which allows a resilient pivoting movement of the upper finger, opens into the receiving pocket.
- the object of the present invention is to provide an unproblematic coolant and / or lubricant supply to a work area with minimal equipment and design effort.
- the present invention provides a cutting device with a cutting insert and a holding part which has a beam part extending in a longitudinal direction and a clamping head in order to achieve the above-mentioned object.
- the clamping head projects with a projection over an upper side of the holding part.
- the supernatant is connected to a first of two clamping fingers which form between them a receiving pocket for receiving the cutting insert.
- a nip is provided below the supernatant for allowing elastic mobility of the first clamping finger.
- the nip opens into the receiving pocket and extends from an end of the holding part facing the workpiece to be machined in the longitudinal direction to its rear end, which is arranged in the transition region between the clamping head and the beam part.
- a coolant and / or lubricant guide for supplying coolant and / or lubricant extends to a cooling and / or lubricant outlet arranged in the projection.
- the projection extends with a projection portion in the longitudinal direction beyond the rear end of the clamping gap. The coolant supply passes through the extension section.
- the invention shows a way how to pass a coolant and / or lubricant guide on the nip past the beam part in the supernatant can and thus creates the conditions for the first time that the coolant and / or lubricant guide can be fully integrated with a clamp holder up to a front-side outlet in the holding part.
- the coolant and / or lubricant can now be guided by the holding part via appropriate routes to immediately to the processing area, where it is actually needed.
- the inventively designed cutting device allows in a simple manner a coolant and / or lubricant supply to the work area. In just one operation, both the tool itself can be assembled or disassembled and the cooling and / or lubricant supply for the tool installed or disconnected.
- working area is to be understood as meaning the area in which the cutting insert is in contact with a workpiece.
- the fingers are arranged on one of the longitudinal sides of the holding part, while the extension portion is arranged on the opposite longitudinal side of the holding part.
- a width of the beam portion is a multiple of the thickness of the extension portion. In other words, that the extension section is very narrow and thus has only a small influence on the inherent elasticity of the material parts of the clamping head.
- the cooling and / or Schmierffenauslass opens on a transverse to the longitudinal direction of the front surface of the upper finger in the room.
- the coolant and / or lubricant jet before it encounters its target, receives a component in the direction of gravity, so that the chips produced during machining are in turn received by the latter and supported by the coolant and / or lubricant jet from the latter be carried away.
- the extension section is web-like.
- a web is understood to mean a flat element that is longer than it is wide.
- a bridge is easy to make.
- the extension portion consists of the same material as the holding part.
- the extension section is formed integrally with the holding part. This has the advantage that the separate production of the extension section is eliminated. Further, by the integration of the extension portion in the holding part of the mounting step for mounting the extension portion on the holding part is unnecessary.
- a rectilinear, by an angle relative to the longitudinal direction inclined passage portion of a coolant and / or Schmierffenleitkanals extends from the beam portion via the extension portion in the supernatant.
- a rectilinear passageway section can be made simply by drilling and provides a short, direct path from the beam section to the overhang.
- the passage section is passed close to the rear end of the nip.
- the distance between the nip and the passage section is thus very low and both are close to each other, so that a narrow design is achieved with a small footprint.
- Fig. 1 shows an inventively designed cutting device in a perspective view
- Fig. 2 shows a front view of the inventively designed cutting device; 3 shows a side view of the cutting device designed according to the invention;
- Fig. 4 shows the enlarged detail X of Fig. 3;
- Fig. 5 shows a section along the line B-B of Fig. 2;
- Fig. 6 shows a section along the line C-C of Fig. 2;
- Fig. 7 shows a front portion of the cutter with cutting insert, in a side view
- Fig. 8 shows a section along the line D-D of Fig. 7;
- Fig. 9 shows a longitudinal section through the cutting device
- Fig. 10 is a sectional view taken along the line A-A of Fig. 9;
- inventively designed cutting device initially has a holding part 12.
- the latter has a beam part 14 which extends in a longitudinal direction L and is bounded at the top by a flat upper side 16 and at the bottom by a lower side 18 arranged parallel to the upper side 16 and pointing downwards in a position of use.
- the beam part 14 is bounded by a rectangular smooth back 20.
- the holding member 12 further includes a right longitudinal side 24 and a parallel spaced from the latter arranged on the left longitudinal side 22.
- a arranged on the front portion of the beam part 14 clamping head 26 communicates with a block-like, solid projection 28 on the level of the top 16 via.
- the workpiece is a rotating workpiece (rotating part).
- the upper finger 30 and the lower finger 32 form between them a receiving pocket 36 for receiving the cutting insert 36 shown in Fig. 7.
- a pointed end of the cutting insert 36 protrudes in the assembled state into a tip holder 38, the rear by a cylindrical Inner wall 40 is limited.
- a clamping gap 44 extending in the longitudinal direction L up to a rear end 42 opens into the receiving pocket 34.
- the clamping gap 44 permits a resilient pivoting movement of the upper finger 30 in a plane parallel to the longitudinal sides 22, 24 of the beam part 14 about a geometrical axis. which extends approximately in the region of the rear end 43 of the clamping gap 44 transversely to the longitudinal direction L through the beam part 14.
- the upper finger 30 By tightening a clamping screw 46, which cooperates with an internal thread, the upper finger 30 is acted upon by a clamping force directed downwards on the lower finger 32, under the influence of which the cutting insert 36 is firmly clamped in the receiving pocket 34 between the fingers 30, 32 , By unscrewing the clamping screw 46, the upper finger 30 is moved under the influence of its inherent elasticity towards its rest position (the position which the upper finger 30 occupies without external force), whereby the receiving pocket 34 is slightly apart and the cutting insert 36 for an exchange is released. In other words, the clamping force with which the cutting insert 36 is clamped in the receiving pocket 34 can be canceled by unscrewing the clamping screw 46.
- the clamping head 26 is partially penetrated by a counter bearing in the form of a pin 49. If the clamping screw 46 is tightened as part of the setting of the cutting insert 36, the upper wall surface of the clamping gap 44 can be supported on the abutment point.
- the front end 30 of the supernatant 28 opposite rear end face 31 of the supernatant 28 is an extension portion 48 from which is formed here as a web 48.
- the web 48 is arranged on the right longitudinal side of the holding part 12.
- the thickness d of the web 48 defined as the extent of the web 48 in a lateral, transversely to the longitudinal direction L extending direction is small relative to the width B of the beam portion 14.
- the width B (defined as the distance between the longitudinal sides 22, 24) of the Beam part 14 a multiple of the thickness d of the web 48.
- the upwardly facing top 51 of the web 50 terminates flush with the top 52 of the supernatant 28 from.
- the integrally formed with the holding part 12 web 48 extends -in a plane parallel to the top 16 or bottom 18 of the beam portion 14 viewed plane - in the longitudinal direction L of the rear end 31 of the supernatant 28 on the rear end 43 of the nip 44th out.
- Fig. 2 shows a front view of the inventively designed cutting device 10.
- the nip 44 penetrates the beam member 14 completely over its entire width B.
- the clear width of the receiving pocket 34 is defined by the distance between the two fingers 30, 32 from each other.
- the outlet opening 58 is located in the region of the lower edge of the front surface 59 of the upper finger 30.
- the outlet opening 54 is located in a right upper corner region of the supernatant 28th
- the upper finger 30 and the lower finger 32 extend on the left longitudinal side 22 of the cutting device 10 each parallel to the left longitudinal side 22 in the longitudinal direction L, while the web 48 on the opposite right longitudinal side 24 of the beam part 14 is arranged.
- Fig. 4 shows the enlarged detail X of Fig. 3.
- a distance between the inner wall 40 of the tip holder 38 and the clamping gap 44 is required so that the structure of the beam portion 14 in this area too close to one another recesses is not weakened too much. This means, conversely, that a coolant channel, theoretically through the area between the inner wall 40 and the nip 44 should have such a small diameter that the flow cross-section would be too small to achieve a sufficient coolant flow.
- Fig. 5 shows a section along the line B-B of Fig. 2.
- the web 48 has a rectangular cross section.
- end portion 64 of thedeatorileitkanals extending with upward tendency of the front surface 59 of the upper finger 30 to the rear and ends with its rear end in an upper transverse portion 72 of theméstoffleitkanals.
- the upper finger 30 has an upper leading edge 68, while the lower finger 32 has a lower leading edge 70.
- the two guide edges 68, 70 in each case form a linear guide of the cutting insert 36 with a corresponding groove provided on the cutting insert 36 into which the guide edges 68, 70 engage.
- Fig. 6 shows a section along the line CC of Fig. 2.
- the sealed by the plug 56, ending in the outlet opening 54 passage portion 62 of thedeatorileitkanals extends with respect to the longitudinal direction L obliquely at an angle oc through the web 48th
- the angle oc is for example 20 °.
- the transversely to the longitudinal direction L extending upper transverse portion 72 of thehariffenleitkanals opens at a right angle in the mouth 74 in the passage portion 62nd
- Fig. 7 shows a side view of the front portion of the cutting device 10 with inserted cutting insert 36.
- the cutting insert 36 is firmly clamped between the two fingers 30, 32 by means of the clamping mechanism described above.
- Fig. 8 shows a section along the line DD of Fig. 7.
- upper transverse portion 72 of thedeffenleitkanals open at a right angle on the one hand the end portion 64 of theméstoffleitkanals and on the other hand, the passage portion 62 of theméstoffleitkanals.
- FIG. 9 shows a section in the longitudinal direction L through the cutting device 10.
- the clamping screw 46 and the outlet opening 58 on the front surface 59 of the upper finger 32 can be clearly seen.
- a transversely to the longitudinal direction L extending lower transverse portion 76 of thedestoffleitkanals connects the passage portion 62 with the apparent in Fig. 11 initial section 78 of theméstoffleitkanals.
- Fig. 10 shows a section along the line AA of Fig. 9.
- the formed between the upper finger 30 and the lower finger 32 receiving pocket opens into the nip 44.
- the threaded shaft 82 of the clamping screw 64 extends at a right angle to Longitudinal direction L.
- Fig. 11 shows a section along the line EE of Fig. 9.
- the initial section 78 terminates in an opening on the underside 18 of the beam portion 14 to the outside inlet opening 80 which is connectable to a (not shown) coolant source.
- the invention represents a way in which a cooling and / or Schmierstoffleitkanal can be integrated into the holding part 12. It is understood that the present invention can be variously modified without departing from the spirit of the invention. Thus, for example, the geometric course of thehariffenleitkanals be designed differently within the holding part 12.
- the extension portion 48 may have a different shape than the web shape. Further, the extension portion 48 may extend, for example, over a majority of the width B of the beam portion 14 or over the entire width B.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Sawing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202011101852U DE202011101852U1 (en) | 2011-06-14 | 2011-06-14 | cutter |
PCT/EP2012/061236 WO2012171976A1 (en) | 2011-06-14 | 2012-06-13 | Holder for a cutting device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2720819A1 true EP2720819A1 (en) | 2014-04-23 |
EP2720819B1 EP2720819B1 (en) | 2017-08-02 |
Family
ID=46319728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12728226.7A Active EP2720819B1 (en) | 2011-06-14 | 2012-06-13 | Holder for a cutting device |
Country Status (6)
Country | Link |
---|---|
US (1) | US9468976B2 (en) |
EP (1) | EP2720819B1 (en) |
JP (1) | JP5851598B2 (en) |
CN (1) | CN103732338B (en) |
DE (1) | DE202011101852U1 (en) |
WO (1) | WO2012171976A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150290716A1 (en) * | 2012-06-28 | 2015-10-15 | Nadine Herberth | Tool for machining |
US9656326B2 (en) * | 2013-04-24 | 2017-05-23 | Iscar, Ltd. | Tool holder having a clamping member with a non-circular cross-section and method for clamping a cutting insert therein |
US9387537B2 (en) | 2014-03-28 | 2016-07-12 | Kennametal Inc. | Wedge clamp with fluid port |
DE102014116915A1 (en) * | 2014-11-19 | 2016-05-19 | Kennametal Inc. | Tool holder for a cutting insert |
DE102014119295B4 (en) | 2014-12-19 | 2023-08-10 | Kennametal Inc. | Tool holder for a cutting insert and method for manufacturing the tool holder |
EP3231542B1 (en) * | 2016-04-14 | 2021-10-06 | Sandvik Intellectual Property AB | A metal cutting grooving insert for face grooving |
DE102016109327A1 (en) * | 2016-05-20 | 2017-11-23 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Holder for a tool for machining, in particular for a long turning tool |
JP6920811B2 (en) * | 2016-11-30 | 2021-08-18 | 京セラ株式会社 | Manufacturing method for cutting tool holders, cutting tools and cutting products |
US10300532B2 (en) * | 2017-06-26 | 2019-05-28 | Kennametal Inc. | Clamp for tool holder |
US11904393B1 (en) * | 2022-08-18 | 2024-02-20 | Iscar, Ltd. | External grooving insert holder having upper and lower jaws connected by angled hinge portion with cooling channel extending through hinge portion, and cutting tool |
WO2024090860A1 (en) * | 2022-10-25 | 2024-05-02 | Taegutec Ltd. | Cutting tool assembly |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3795454A (en) * | 1971-10-01 | 1974-03-05 | S Elchyshyn | Adjustable boring bar with lubricant passages |
US4072438A (en) | 1976-07-26 | 1978-02-07 | Trw Inc. | Insert type drill and insert therefor |
US4778315A (en) * | 1986-09-26 | 1988-10-18 | The Boeing Company | Chip removal and tool lubricating device and method |
JPH07227702A (en) * | 1994-02-22 | 1995-08-29 | Mitsubishi Materials Corp | Tool for grooving |
DE4435857A1 (en) | 1994-10-07 | 1996-04-11 | Kennametal Hertel Ag | Drill with a bit part |
IL111370A (en) * | 1994-10-23 | 1998-08-16 | Iscar Ltd | Cutting tool assembly having an exchangeable adaptor |
SE505399C2 (en) * | 1995-11-09 | 1997-08-18 | Sandvik Ab | Clamping method and clamping device for inserts |
US6045300A (en) * | 1997-06-05 | 2000-04-04 | Antoun; Gregory S. | Tool holder with integral coolant passage and replaceable nozzle |
DE19807498A1 (en) * | 1998-02-21 | 1999-09-02 | Horn P Hartmetall Werkzeugfab | Holder for cutting tool inserts |
DE19834635C2 (en) | 1998-07-31 | 2001-07-26 | Guehring Joerg | Drilling tool with an exchangeable cutting insert that is secured against loosening |
SE514938C2 (en) * | 1999-09-02 | 2001-05-21 | Sandvik Ab | Cutting Tools |
DE10346726A1 (en) * | 2003-10-08 | 2005-05-19 | Karl-Heinz Arnold Gmbh | Device for supplying a cooling lubricant stream during machining of workpieces |
SE530581C2 (en) * | 2006-11-28 | 2008-07-08 | Sandvik Intellectual Property | Chip separation tool and basic body comprising two channels for a fluid |
SE530579C2 (en) * | 2006-11-28 | 2008-07-08 | Sandvik Intellectual Property | Tools and basic body for multi-channel chip separation machining |
DE102008023767A1 (en) * | 2008-05-09 | 2009-11-12 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Holder for a cutting tool insert |
IL191520A (en) * | 2008-05-18 | 2012-04-30 | Iscar Ltd | Cutting tool and cutting insert therefor |
IL194030A (en) * | 2008-09-11 | 2012-03-29 | Iscar Ltd | Cutting tool and cutting insert therefor |
-
2011
- 2011-06-14 DE DE202011101852U patent/DE202011101852U1/en not_active Expired - Lifetime
-
2012
- 2012-06-13 CN CN201280029634.9A patent/CN103732338B/en active Active
- 2012-06-13 EP EP12728226.7A patent/EP2720819B1/en active Active
- 2012-06-13 WO PCT/EP2012/061236 patent/WO2012171976A1/en active Application Filing
- 2012-06-13 JP JP2014515181A patent/JP5851598B2/en active Active
-
2013
- 2013-12-12 US US14/104,272 patent/US9468976B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20140099168A1 (en) | 2014-04-10 |
CN103732338A (en) | 2014-04-16 |
WO2012171976A1 (en) | 2012-12-20 |
JP2014516815A (en) | 2014-07-17 |
CN103732338B (en) | 2016-09-07 |
JP5851598B2 (en) | 2016-02-03 |
EP2720819B1 (en) | 2017-08-02 |
DE202011101852U1 (en) | 2012-09-19 |
US9468976B2 (en) | 2016-10-18 |
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